Shoe-sole press



June 4, 1929. P. J. WENTWOIQQTH W m h u H m m 1 m n 1 Z I Q June 4, 1929.

P. J. WENTWORTH 1,716,287

SHOE SOLE PRESS Filed July 20, 1925 3 Sheets-Sheet 2 June 4, 1929.

P. J. WEN- ORTH- SHOE SOLE PRESS Filed July 20, 1925 3 Sheets et I Immmmmummml u mmum wt} M r a h Patented June 4, 1929.

t me

PEARL J. WENTWORTH, 0F FORT THOMAS, KENTUCKY.

SHOE-SOLE PRESS.

Application filed July 20, 1925.

My invention relates to shoe machinery, and is particularly directed to a machine for laying soles. More specifically my invention is directed to a machine for holding the outsole to the lasted upper and insole, while the adhesive 1 :lapted to hold them together sets. The process for making shoes to which this invention is particularly applicable is described in Letters Patent No. 1,280,604.

One object of my invention is to provide a machine adapted to hold the outsole to the lasted upper and insole, while the adhesive between them sets.

Another object of my invention is to pro vide a machine adapted to apply pressure initially longitudinally to the shoe for the V purpose of holding the outsole to the lasted upper ard insole so that the outsole will be uniformly in contact with the insole and will not buckle or be clear of it at any point.

Another object of my invention is to provide mounting means for a plurality of presser units adapted to facilitate quantity production by making the operation of the units successive and'continuous.

Other objects and advantages'will be more fully set forth in the description of the accompanying drawings forming a part of this specification, in which:

Figure 1 is a side elevation of one presser unit in clamping position mounted on the rotary table.

Figure 2 is an enlarged side elevation of the presser unit with the foot elevated. 1 Figure 3 is a front elevation of the presser unit with the presser foot elevated and mounted on the rotary table.

Figure 4 is a detail plan sectional view taken on line 4-4, Fig. 1, detailing the presser foot.

Figure 5 is a sectional view taken on line 55, of Fig. 4.

A circular table 1 is 'rotatively mounted upon a post 2. The table is supported at its edges by a plurality of supplemental posts 3 having at their tops, rollers 4 adapted to contact the underside of thetable near its edge and support the table with the minimum of friction.

Aplurality of presser units are secured on top of the table adjacent to the edge. The units may be secured as by screws 5 or otherwise. Each unit comprises a post formed by two vertical members 6 and a cross mem- Serial No. 1%,680.

her 7 the cross member 7 being adapted to form one support for a platform 8. The upper end of one of the vertical members is bent to form an upper cross member 7 and 1s ]o1ned at right angles to the other vertical member. The platform is further supported by a brace 9 extendin upwardly from the edge of the table. %)n this platform is mounted a jack 10 provided with a medial hinge 11 to facilitate the placing of the lasthole of the last upon the point 12 of this jack. From the outer end of this platform a brace extends upwardly to support the toe of the shoe. A bracket 13 extends forwardly from the upper cross-member 7 a of the post and to this is hinged a presser foot comprising a carrier 14 and a web 15. The carrier 14 as disclosed, is rectangular, hollow in the center. The two side members are separated a distance greater than the width of the shoe. The carrier is provided with a double bend which roughly conforms to the curvature of the arch of the shoe and insures pressure over the entire sole. Between the side members of the carrier is the web 15 of slightly flexible elastic or pliable material such as rubber, adapted to provide a yieldable pressure on the sole of the shoe. A portion of an inner tube of an automobile tire can be placed over the carrier, and is admirably adapted to apply the necessary yieldable pressure. Filling material may be placed within the inner tube when desirable, to increase the tension thereof. If any hammering is necessary to level the sole, this can be done through the flexible web 15 after the pressure is applied.

A second bracket 16 extends forwardly from the post 6 and to it is attached one end of a coiled spring 17, the main portion of which is wound around the pivot 18 on which the presser foot is hinged. The other end of this spring engages one side member of the carrier 14. The spring is therefore adapted to hold the presser foot in an elevated position out of contact with the shoe, so that the lasts can be changed without interference. The outer end of the web carrier 1 is secured to an arcuate clamp member 19 provided with teeth 20 adapted to be engaged by a pawl 2l-secured' to the top of the post. This arcuate member holds the presser foot in engagement with the shoe while the adhesive is setting. When the pawl is tripped,

the coiled spring and the flex of the web cause the presser foot to rise and the shoe can be removed. A trip 21 is provided on the end of an arm extending outwardly from the center post on which the table is mounted.

The table rotates as the shoes are successively applied to the individual presser units, and as disclosed the trip is so placed that it functions just before a complete revolution of the individual shoe has been completed.

In order to apply proper pressure to each presser foot successively, pedal-operated pressing means are provided. A lever 22 is pivoted to a bracket mounted on the floor and-extends outwardly beyond the edge of the table. A spring 23 is attached to this lever at one end, and to one of the table supporting posts at the other end. This spring holds the lever at such a height that it is convenient for the foot of the operator. Pivoted to this lever is a rod 24 provided at its upper end with a yoked hook 25 adapted to engage the end of the web carrier with one arm of the yoke on either side of the arcuate clamping member. This hook is engaged with a carrier while it is in its upper position, the lever 22 is then depressed so that the presser foot is drawn down until it presses the sole tightly.

The foot is held in this posit-ion by the engagement of the pawl and the arcuate clamping member. The lever is then allowed to rise and the table rotated so that the next pressing unit is brought into position. The uide 26 extends upwardly from the floor an partially surrounds this rod so that it is always held in an approximately vertical position in order that it can beeasily hooked over each presser foot as it comes into position.

Thus I provide a plurality of pressing units adapted to hold an outsole to a lasted upper and insole while the adhesive between them sets, said units so mounted that they may be successively and continuously operated.

This machine is particularly valuable in laying soles according to the process of making.

shoes described in Patent No. 1,280,604 before mentioned. Tacking is thus rendered unnecessary and a superior product results. The machine is equally valuable for applying flexible soles such as felt or crepe rubber soles where the sole is not molded to conform to the last. The presser foot when lowered applies downward pressure first to the heel end of the shoe. The pressure then progresses longitudinally over the arch, ball and toe portions. The curve in the foot assures the application of the pressure over the entire arch and makes it impossible for the outsole to buckle or be clear of the insole at any point.

The rubber also prevents the sole from slipping and'adhering in an incorrect position.

This feature is very important where the soles are but to size before being laid.

Having described my invention, I claim: 1. In a machine of the class described, a

post, a pliable presser foot pivoted to said post, means located below said presser foot 'for supporting a lasted upper and insole, the presser foot and lasted upper and insole being so positioned with relation toeach other .that the foot applies pressure to one end of the shoe first and then progressively to the other end in order to clamp an outsole uniformly thereto, a toothed arcuate clamping member secured to said presser foot, and a pawl adapted to engage the teeth of the arcuate member and maintain the pressure.

2. A machine for laying soles comprising a rotatable table, a plurality of presser units mounted adjacent to one edge of said table, each unit adapted to clamp an outsole to a lasted upper and insole, leverage means adapted to supply the clam ing ressure to each unit successively, as t e ta le rotates, a pawl on each unit adapted to maintain the clamping pressure, and a trip adapted to release saidpawls successively as the table rotates.

3. A device for laying shoe soles, comprising, a support for the shoe, a swinging frame pivoted to the support adjacent to the heel end of the supported shoe, said frame having side arms for straddling said shoe, and a flexible web attached between the arms of said frame whereby swinging the frame downwardly progressively presses the sole, posi tioned on the shoe, from the heel to the toe end thereof.

' 4.- A device for laying shoe soles, comprising, a'support for the shoe, a swinging frame pivoted to the support adjacent to the heel end of the shoe, said frame having side arms disposed for straddling said shoe, an elastic web attached between said arms of said frame, e

and means for swinging said frame and drawing said web down upon a sole positioned on the shoe, whereby the web progressively presses the sole from the heel to the toe end thereof.

5. A device for rolling and layin shoe soles, comprising, a support for the s 0e, :1

frame pivoted to the support adjacent to and below the heel surface of the shoe and havingv side arms disposed for straddling said shoe, an elastic web attached between the arms of said framefsaid arms shaped for disposing the web'in a curve engaging into the instep of the sole disposed on the shoe, and means for drawing said frame down upon the sole,

whereby the web progressively presses the sole from the heel to the toe end thereof.

6. A device for laying shoe soles, compristending across said frame to engage the outer sole and progressively press the sole upon the lasted shoe upper'as the frame is swung 10 into its clampin position.

In witness w ereof, I hereunto subscribe my name. Y

' PEARL J,- WENTWORTH. 

